Flash crashes dozens of times a day and I am trying to figure out WHY.

I have the recommended latest player & browser for my operating system.

The only diagnostic information I have is that the crashes seem to occur when a few tabs are open with videos loading in them and when any one video is closed, flash then locks up the browser for about 30 seconds, and then ALL the videos that were loading in separate tabs are dumped & say that the plugin crashed.

Bringing up the CentOS 6 "Applications->System Tools->System Monitor", I see the numerous Flash crashes appear to have some relationship with "npviewer.bin", which uses the "/usr/lib64/flash-plugin/libflashplayer.so" shared object module and which has numerous "open files", one of which is "/home/<username>/.xsession-errors".

Looking at "/home/<username>/.xsession-errors", we find these lines, which may be useful.

our linux experts have long gone, but we hope to be a stop gap in the mean while...

the first suggestion woud to uninstall nspluginwrapper, which you have already done. it is not needed when you are using a 64-bit browser and flash player plugin. it actually causes instability when installed.

the scond suggestion would be to disable hardware acceleration.

right-click flash content

in the first tab, unselect the checkbox "enable hardware acceleration"

i'm not able to suggest any troubleshooting tips... if you have reproducible steps for a crash, it would be best to enter them in our external bugbase @ http://bugs.adobe.com. the only problem for linux is that development has stopped on that platform with Flash Player 11.2. the pepper implementation will be available in the future and will work on browsers that support it, which would be chrome to date.